|本期目录/Table of Contents|

[1]张书丰,陆航,沈晓伟.大范围覆土严重卸载条件下的盾构隧道保护技术研究[J].中国安全生产科学技术,2017,13(12):167-173.[doi:10.11731/j.issn.1673-193x.2017.12.026]
　ZHANG Shufeng,LU Hang,SHEN Xiaowei.Research on protective techniques of shield tunnel with wide-range serious unloading of covering soil[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2017,13(12):167-173.[doi:10.11731/j.issn.1673-193x.2017.12.026]
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大范围覆土严重卸载条件下的盾构隧道保护技术研究
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
13
期数:
2017年12期
页码:
167-173
栏目:
职业安全卫生管理与技术
出版日期:
2017-12-31

文章信息/Info

Title:
Research on protective techniques of shield tunnel with wide-range serious unloading of covering soil
文章编号:
1673-193X(2017)-12-0167-07
作者:
张书丰1 ; 陆航2; 沈晓伟1
（1.南京地铁集团有限公司，江苏 南京 210008；2. 南京市地铁交通设施保护办公室，江苏 南京 210012)
Author(s):
ZHANG Shufeng1;  LU Hang2 ; SHEN Xiaowei1
(1. Nanjing Metro Co. Ltd., Nanjing Jiangsu 210008, China; 2. Nanjing Metro Traffic Facilities Protection Department, Nanjing Jiangsu 210012, China)
关键词:
盾构隧道; 卸载; 保护技术
Keywords:
shield tunnel;  unloading;  protective technique
分类号:
X947 ；U458.1
DOI:
10.11731/j.issn.1673-193x.2017.12.026
文献标志码:
A
摘要:
为了研究大范围覆土严重卸载条件下盾构隧道保护技术的可行性及其应用效果，结合某盾构隧道上方大面积超深度基坑工程，采用有限元计算分析及监测数据验证2种方式，对基坑开挖导致盾构隧道上方覆土严重不足，采取的隧道结构保护技术实施效果进行分析和验证。研究结果表明：在隧道上方覆土严重不足、工程地质条件极差等条件下，采用桩板结构，综合隧道内配重、土层注浆加固、洞内注浆等保护技术，能有效控制盾构隧道结构在极小覆土工况下的上浮变形，可取得良好的保护效果，采用的保护技术安全可行，可作为类似工况下盾构隧道保护工作参照依据。
Abstract:
To study the feasibility and application effect of the protective techniques for the shield tunnel with wide-range serious unloading of covering soil, combined with the foundation pit engineering with large area and ultra-deep depth above a certain shield tunnel, the implement effect of the adopted protective techniques of tunnel structure for the shield tunnel with seriously insufficient covering soil caused by the foundation pit excavation were analyzed and verified by using two methods of finite element calculation analysis and monitoring data verification. The results showed that under the conditions of seriously insufficient covering soil over the tunnel and extremely poor engineering geological conditions, adopting the pile-board structure combined with the counterweight, grouting reinforcement of soil layer, grouting in the tunnel and other protective techniques could control the floating deformation of the shield tunnel structure under the conditions of little covering soil effectively, with a good protection effect. These protective techniques are safe and feasible, and can be used as the reference basis for the protection work of shield tunnel with similar conditions.

参考文献/References:

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备注/Memo

备注/Memo:
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更新日期/Last Update: 2018-01-29